Simulation codes of “An Advanced NOMA Security Design with Signal Pre-coding and Simultaneous Transmission using Antenna Diversity”

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Simulation codes of “An Advanced NOMA Security Design with Signal Pre-coding and Simultaneous Transmission using Antenna Diversity

In this simulation code, we present the algorithm and results of an efficient, robust and low-complexity security technique for future communication systems. The proposed technique is capable of providing enhanced security from both external and internal eavesdroppers at the same time. In this technique, we have presented a novel design of multipe-input single output non-orthogonal multiple access (MISO-NOMA OFDM) system.

This system consists of two antennas with specifically designed precoders, where the pre-coded data is superimposed with the users’ data and simultaneously transmitted from two different antennas. This technique eliminates the need for successive interference cancellation (SIC), making it more complex for the eavesdroppers to decode the information. The investigated results proves that the proposed technique is suitable for providing perfect secrecy with no processing at the receiver. Therefore, the proposed technique have great potential to be implemented in low- complexity IoT based applications.

The future wireless communication systems demand enhanced security and reliability than the current systems. In this work, we propose a more simple yet efficient physical layer security (PLS) technique for achieving reliable and secure communication in the multiple-input single-output non-orthogonal multiple access (MISO-NOMA) system. This system is capable of providing enhanced confidential communication as well as inter-user interference cancellation without using the successive interference cancellation (SIC) method. As conventional NOMA was already adopted under the name of multi-user superposition transmission (MUST) in release 13 of 3GPP and is improved in terms of receiver design for 3GPP-release 16, which still suffers from several security risks and drawbacks. In this work, we have analyzed these drawbacks and presented a new kind of NOMA with better performance results in cases where conventional NOMA fails. The proposed algorithm combines the benefit of pre-coder matrices with simultaneous transmission using antenna diversity to provide simple, reliable, and secure communication without complex processing at the receivers in downlink scenarios. The effectiveness of the proposed algorithm is verified and proven by extensive numerical simulations.

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